Create credentials.h header file inside your project directory
You can copy and paste this snippet and change the values:
#define FIREBASE_HOST "YourDB.firebaseio.com"
#define FIREBASE_AUTH "Some secret"
#define DB_PATH "/Parent directory"
#define BASKING_TIME "/Parent directory/Child directory"
#define IR_STATUS "/Parent directory/Child directory"
#define UV_STATUS "/Parent directory/Child directory"
#define START_MINUTE "/Parent directory/Child directory"
#define START_HOUR "/Parent directory/Child directory"
#define OVERRIDE "/Parent directory/Child directory"
#define TEMPERATURE "/temperature"
#define HUMIDITY "/humidity"
Use different parent directory for temperature and humidity, because you don't want your get DB values every time temperature or humidity changes.